Green Glue is a liquid,
waterborne, viscoelastic damping compound representing the highest
performance soundproofing product of its type. Green Glue offers
superior performance in lowering the resonant frequency of walls,
ceiling, or floor surfaces. Green Glue uniquely serves as a sound
isolator and sound dampener to produce a higher STC. Buy by the case and save!

To reduce noise through an existing wall, apply 2 tubes of Green Glue on a new sheet of drywall then install it over the existing drywall. Keep in mind, it is important to cover the entire wall with your Green Glue sandwiched between sheets of drywall. Apply SoundAway Acoustical Caulk between the edges of the drywall to create an air-tight seal.